CN116196006A

CN116196006A - Electronic equipment and bioelectric signal acquisition method

Info

Publication number: CN116196006A
Application number: CN202111444025.7A
Authority: CN
Inventors: 谭银炯; 白亮; 尚睿颖; 刘毅
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2023-06-02
Also published as: EP4212097A1; WO2023098154A1; EP4212097A4

Abstract

The application relates to the field of wearable equipment, aims to solve the problem that the contact reliability of the wearable equipment and the skin of a wearer in the prior art is poor, and provides electronic equipment and a bioelectric signal acquisition method. The electronic device includes a rear case, a plurality of first contact electrodes, and a plurality of second contact electrodes. The rear shell is distributed with a first contact area and a second contact area. The first contact electrodes and the second contact electrodes are respectively distributed on the rear shell at intervals and are electrically connected with each other. The first contact electrode and the second contact electrode are used for respectively contacting the skin to form a bioelectric signal acquisition circuit. The first contact region is distributed with at least one first contact electrode and at least one second contact electrode, and the second contact region is distributed with at least one first contact electrode and at least one second contact electrode. The beneficial effects of this application are that can gather bioelectricity signal reliably and can compromise the setting of charging spring thimble.

Description

Electronic equipment and bioelectric signal acquisition method

Technical Field

The application relates to the field of wearable equipment, in particular to electronic equipment and a bioelectric signal acquisition method.

Background

Wearable devices such as electronic watches, hand rings, and the like, may be used to measure bioelectric signals of a wearer, such as cardiac signals, body composition electrical signals, and the like.

However, the wearable device in the known technology has poor contact reliability with the skin of the wearer, thereby affecting the problem of the device for acquiring bioelectric signals.

Disclosure of Invention

The application provides electronic equipment and a bioelectric signal acquisition method, which are used for solving the problems that the contact reliability of wearable equipment and the skin of a wearer in the prior art is poor and the bioelectric signal acquisition is influenced.

In a first aspect, embodiments of the present application provide an electronic device that includes a housing, a plurality of first contact electrodes, and a plurality of second contact electrodes. The housing includes a rear housing having a first contact area and a second contact area distributed therein. The first contact electrodes are distributed on the rear shell at intervals and are electrically connected with each other on the inner side of the rear shell; the first contact electrode is at least partially exposed outside the rear case. The second contact electrodes are distributed on the rear shell at intervals and are electrically connected with each other on the inner side of the rear shell; the second contact electrode is at least partially exposed outside the rear case. And, the second contact electrode and the first contact electrode are distributed on the rear case to be insulated from each other. The first contact region is distributed with at least one first contact electrode and at least one second contact electrode, and the second contact region is distributed with at least one first contact electrode and at least one second contact electrode.

When a user wears the electronic device in the embodiment of the application, if the user wears the electronic device normally or wears the electronic device more tightly, the first contact area and the second contact area are both contacted with the skin of the user, and at this time, the first contact electrode and the second contact electrode are easy to ensure contact between the skin and the first contact electrode due to the existence of the plurality of first contact electrodes and the plurality of second contact electrodes; if the wearing is loose, the shell may tilt to one side due to gravity or other reasons, and one of the first contact area and the second contact area is separated from the skin of the wearer, at this time, because the first contact area is distributed with the first contact electrode and the second contact electrode at the same time, the second contact area is also distributed with the first contact electrode and the second contact electrode at the same time, so that even if the shell tilts to one side, the contact between the first contact electrode and the second contact electrode and the skin can be ensured.

In one possible implementation, the first contact region and the second contact region are distributed at a distance from each other in the first direction on the rear housing, the rear housing having an intermediate region between the first contact region and the second contact region.

In this implementation, the intermediate region may be used to separate the first contact region and the second contact region so that other structures of the electronic device, such as a charge spring Pin (Pogo Pin) or other measurement electrodes/sensors, are disposed therebetween.

In one possible implementation, the electronic device further includes a charge spring spike disposed in the middle region.

In the implementation mode, the charging spring thimble of the electronic equipment is arranged in the middle area, so that the charging function of the electronic equipment can be realized.

In one possible embodiment, the rear housing has a convex annular region, which is circumferentially distributed with a plurality of contact electrodes spaced apart from one another. One side of the annular region is a first contact region, and at least one first contact electrode and one second contact electrode are arranged in the first contact region. The other side of the annular region is a second contact region, and at least one first contact electrode and one second contact electrode are arranged in the second contact region.

In this implementation, the rear shell is provided with a convex annular region for distributing contact electrodes, which is advantageous for contact between the contact electrodes and the skin of the wearer.

In one possible implementation, the number of contact electrodes is 2N, N being a positive integer, where N contact electrodes are first contact electrodes and N contact electrodes are second contact electrodes. N first contact electrodes are sequentially adjacent to each other in the circumferential direction of the annular area, and N second contact electrodes are sequentially adjacent to each other in the circumferential direction of the annular area; alternatively, the N first contact electrodes and the N second contact electrodes are staggered in the circumferential direction.

In the implementation manner, for the situation that the first contact electrodes and the second contact electrodes are respectively adjacent in sequence, the distribution of the first contact electrodes and the second contact electrodes is concentrated, and the electric connection wiring between the first contact electrodes and the second contact electrodes is simple and convenient; in the case of the first contact electrode and the second contact electrode being staggered in sequence, it is easier to ensure that at least one of the first contact electrode and one of the second contact electrode is in contact with the skin of the wearer.

In one possible implementation, the contact electrode is in the shape of an arc ring.

In the implementation mode, the contact electrodes are arc-shaped, so that each contact electrode can be surrounded into an annular circumferential distribution form, the appearance is attractive, and the contact between the contact electrode and the skin of a wearer is facilitated.

In one possible implementation, the rear shell includes a main shell plate and a circular plate protruding outward from a central position of the main shell plate. The first contact region and the second contact region are both located on the circular plate.

This implementation facilitates the first contact area and the second contact area being in contact with the wearer's skin.

In one possible implementation, a plurality of accommodating grooves are formed on the outer side surface of the circular plate, and the accommodating grooves are distributed at intervals along the circumferential direction and are used for accommodating the first contact electrodes or the second contact electrodes. The first contact electrode and the second contact electrode are respectively exposed out of the outer side surface of the circular plate.

The implementation manner is beneficial to determining the positions of the first contact electrode and the second contact electrode, and when the electric bicycle is worn, the first contact electrode and the second contact electrode can be pressed between the skin of a wearer and the bottom surface of the accommodating groove, so that the first contact electrode and the second contact electrode are beneficial to contact with the skin of the wearer.

In one possible embodiment, the circular plate is further provided with through holes penetrating from the bottom surface of the groove of each receiving groove to the inner side surface of the circular plate. The inner side of the rear shell is provided with a first conductive plate and a second conductive plate; each first contact electrode is electrically connected to the first conductive plate through a conductive member passing through the corresponding through hole, and each second contact electrode is electrically connected to the second conductive plate through a conductive member passing through the corresponding through hole.

In this embodiment, the first contact electrodes and the second contact electrodes are electrically connected to each other by the first conductive plate and the second conductive plate provided inside the rear case.

In one possible implementation, the receiving groove is arc-shaped.

In the implementation mode, the accommodating groove is in an arc ring shape and is suitable for being matched with the arc ring-shaped contact electrode.

In one possible implementation, the electronic device further includes a charging spring thimble; the circular plate is also provided with a through hole for allowing the charge spring thimble to be exposed out of the outer side surface of the circular plate; the through holes are positioned on the circumference of the accommodating groove and are positioned between the adjacent accommodating grooves of the circular plate.

In the implementation mode, the circular plate is provided with the charging spring thimble and simultaneously provided with each contact electrode, and the space arrangement is reasonable. And the reasonable distribution of the first contact electrode and the second contact electrode is ensured while the problems of complex structure matching relation and poor sealing caused by the fact that the charging spring thimble penetrates through the contact electrode are avoided, so that the formation of a bioelectric signal acquisition circuit is facilitated.

In one possible implementation, the housing includes a main frame with front and rear openings, and a rear housing is connected to the main frame at a rear opening.

In this implementation, the rear cover of the housing serves as a rear end closure structure for the main frame.

In one possible implementation, the first contact electrode and/or the second contact electrode is/are composed of an electrically conductive material.

In this implementation, the first contact electrode/second contact electrode may be made of an electrode material such as stainless steel.

In one possible implementation, the first contact electrode and/or the second contact electrode comprises a substrate and a conductive layer at a surface of the substrate.

In this implementation, the first contact electrode/second contact electrode may also be electrically conductive to the skin by providing a conductive layer on the surface of the non-conductive substrate.

In one possible implementation, the housing further comprises a printed circuit board. The first contact electrode and/or the second contact electrode are electrically connected to the printed circuit board through the conductive member. Optionally, the conductive member is a conductive foam or a conductive elastic sheet.

In this implementation, the bioelectric signals received by the first contact electrode and/or the second contact electrode from the skin of the wearer may be transmitted to the printed circuit board via the conductive member for processing analysis. The conductive foam or the conductive elastic sheet has certain elasticity, can adapt to the jumping of the interval between the first contact electrode/the second contact electrode and the printed circuit board in a certain range, and is beneficial to the reliability of electric connection.

In one possible implementation, the printed circuit board includes an AFE chip electrically connecting the first contact electrode and the second contact electrode, respectively, to collect and/or process electrical signals from the first contact electrode and the second contact electrode.

In this implementation, the AFE chip may pre-sample the signals transferred by the first contact electrode and the second contact electrode.

In one possible implementation, the electronic device is an electronic watch or electronic bracelet.

In this implementation, the electronic device is an electronic watch or electronic wristband that is adapted to be worn on the wrist of a wearer to contact the skin on the wrist of the wearer and to collect the relevant bioelectric signals of the wearer from the wrist.

Of course, in other implementations, the wearable setting may also be a device worn in other locations, such as a ring worn on a finger, or the like.

In one possible implementation, the electronic device is an electronic watch and the housing is a dial of the electronic watch. The electronic watch further includes a bracelet coupled to the housing; the shell is provided with a first connecting lug and a second connecting lug which are oppositely arranged along a second direction, and the two ends of the watch chain are respectively connected with the first connecting lug and the second connecting lug, and the watch chain and the shell enclose a ring shape for being sleeved on the wrist of a human body. The first contact region and the second contact region are spaced apart from each other in the first direction at the rear housing, the rear housing having an intermediate region between the first contact region and the second contact region. The electronic watch further comprises two charging spring thimbles, and the two charging spring thimbles are arranged in the middle area at intervals along the second direction. When the electronic watch is worn on a human wrist, the first direction is along the length direction of the human wrist, and the second direction is along the length direction perpendicular to the human wrist.

The electronic device in this implementation is an electronic watch, where the natural state of the hands of the wearer is that the hands hang down, and the first direction is along the gravity direction, i.e. the first contact area and the second contact area are distributed up and down. When the wearing is tighter, the first contact area and the second contact area can be ensured to contact the wrist, and the collection of bioelectric signals is ensured; meanwhile, when the electronic watch is loosely worn, under the action of gravity and the constraint of a watch chain, one of the first contact area and the second contact area, which is positioned above, is tilted to leave the wrist skin, but one of the first contact area and the second contact area, which is positioned below, is pressed on the wrist skin, namely one of the first contact area and the second contact area is contacted with the wrist skin, and the first contact electrode and the second contact electrode are arranged on either of the first contact area and the second contact area, so that the collection of bioelectric signals can be realized.

In one possible implementation, the first contact electrode and the second contact electrode are ECG electrodes or body composition detection electrodes.

The implementation can be used for acquisition of electrocardiosignals or body composition signals.

In a second aspect, an embodiment of the present application provides a bioelectric signal collection method, where a subject wears the foregoing electronic device, and at least one of the first contact area and the second contact area contacts the skin of the subject, so that at least one first contact electrode and at least one second contact electrode contact the skin of the subject to form a bioelectric signal collection circuit, thereby collecting bioelectric signals of the subject.

The bioelectric signal acquisition method in the embodiment of the application adopts the electronic equipment, can meet the requirements of acquiring bioelectric signals under the condition of loose or tight wearing, and ensures the reliability of signal acquisition.

In one possible implementation, the bioelectric signal is an electrocardiographic signal or a body composition electrical signal.

The bioelectric signal acquisition method of the implementation mode can be used for acquiring electrocardiosignals or body composition signals.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly describe the drawings in the embodiments, it being understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present application;

FIG. 2 is a schematic illustration of one wearing state of the electronic device of FIG. 1;

FIG. 3 is a schematic illustration of another wear state of the electronic device of FIG. 1;

fig. 4 is a schematic structural diagram of an electronic device according to another embodiment of the present application;

FIG. 5 is an S-view of the electronic device of FIG. 4 (the chain only showing portions);

FIG. 6 is a cross-sectional view of the dial portion of the electronic device of FIG. 5, taken along line A-A;

FIG. 7 is a partially structured three-dimensional expanded view of the electronic device of FIG. 4;

FIG. 8 is another perspective three-dimensional view of a portion of the structure of the electronic device of FIG. 4;

FIG. 9 is an expanded view of FIG. 8;

FIG. 10 is a schematic diagram of another implementation of the electronic device of FIG. 5;

FIG. 11 is a schematic diagram of yet another implementation of the electronic device of FIG. 5;

FIG. 12 is a diagram showing the connection relationship between each contact electrode and the first/second conductive plates of the electronic device of FIG. 11;

FIG. 13 is a schematic diagram of a bioelectric signal acquisition circuit of the electronic device of FIG. 5;

FIG. 14 is a partial structural view of an electronic device in another electrode configuration;

fig. 15 is a schematic view showing an electrical connection structure between the first contact electrode/second contact electrode and the printed circuit board in the embodiment of fig. 14.

Description of main reference numerals:

electronic device 10

Electronic watch 10a

Shell 11

First contact electrode 12

Second contact electrode 13

Rear housing 14

Flexible circuit board 15a

Flexible circuit board 15b

Endless belt 16

Charging spring thimble 17

Dial 18

Watch chain 19

Display screen 20

Main frame 21

Bioelectric signal acquisition circuit 22

Main housing plate 23

Circular plate 24

Printed circuit board 25

Conductive element 26

AFE chip 27

First conductive plate 28

Second conductive plate 29

Substrate 30

Conductive layer 31

First connecting lug 32

Second connecting lug 33

Wearer 80

Wrist 81

Skin 82

First contact D1

Second contact D2

Conductive line D3

Interior space Q1

Accommodation groove Q2

Through hole Q3

Via Q4

Groove Q5

First contact region S1

Second contact region S2

Partition area S3

Annular region S4

First direction Y1

Second direction Y2

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present application are described in detail below. The following embodiments and features of the embodiments may be combined with each other without collision.

Examples

The embodiment of the application provides electronic equipment, which can be electronic equipment worn on a wrist such as an electronic watch and a bracelet, can also be head-mounted electronic equipment such as intelligent glasses and goggles, and can also be electronic equipment worn on feet, a trunk or other positions and used for acquiring bioelectric signals such as electrocardiosignals and the like when being worn.

The electronic equipment in the embodiment of the application can be used for a human body and other animals.

Referring to fig. 1 in conjunction, an electronic device 10 in an embodiment of the present application includes a housing 11, a plurality of first contact electrodes 12, and a plurality of second contact electrodes 13.

For example, when the electronic device 10 is an electronic device for acquiring an electrocardiographic signal, the corresponding first/second contact electrodes 12/13 are ECG electrodes. The acquired electrocardiographic signals may be processed to generate an Electrocardiogram (ECG) for recording electrical activity of the heart to aid in diagnosing heart disease. When the electronic device 10 is used for acquiring a body composition electrical signal (such as a human body resistance value) or other bioelectric signals, the corresponding first contact electrode 12/second contact electrode 13 has other electrode structures.

In this embodiment, the first contact electrode and the second contact electrode may be made of the same conductive material, or may be made of different conductive materials. For example, the first contact electrode 12 and the second contact electrode 13 are made of a metal material such as stainless steel or copper or other nonmetallic conductive material.

With continued reference to fig. 1, the housing 11 includes a rear shell 14, wherein the rear shell 14 refers to the shell that faces and is intended to contact the skin side of the wearer when worn. The rear housing 14 is distributed with a first contact area S1 and a second contact area S2. The plurality of first contact electrodes 12 are spaced apart on the rear case 14 and electrically connected to each other inside the rear case 14 (refer to the side of the rear case facing away from the wearer's skin, the same applies hereinafter), for example, through a flexible circuit board (Flexible Printed Circuit, FPC) 15a provided inside the rear case 14. The first contact electrode 12 is at least partially exposed outside the rear case 14. Similarly, a plurality of second contact electrodes 13 are spaced apart on the rear case 14 and electrically connected to each other inside the rear case 14, such as through a flexible circuit board 15b provided inside the rear case 14. The second contact electrode 13 is at least partially exposed outside the rear case 14. The first contact electrode 12 and the second contact electrode 13 are distributed insulated from each other on the rear case 14; the rear case 14 is made of a non-conductive material such as ceramic, for example, and the first contact electrode 12 and the second contact electrode 13 are spaced apart from each other on the rear case 14 so that the first contact electrode 12 and the second contact electrode 13 are distributed on the rear case 14 so as to be insulated from each other. The first contact electrode 12 and the second contact electrode 13 are for contacting the skin of a wearer, respectively, and are connected to a printed circuit board (Printed Circuit Board, PCB) (not shown in fig. 1) within the electronic device 10 to form a bioelectric signal acquisition circuit. In order to simultaneously expose the rear housing 14 for contacting the skin and for electrically connecting the inside of the rear housing 14, holes may be formed in the rear housing 14, the first contact electrode 12/the second contact electrode 13 are provided at the corresponding holes, and the outside is exposed to the rear housing 14, the inside is directly electrically connected to each other or is electrically connected to each other through other conductive structures. The first contact region S1 is distributed with at least one first contact electrode 12 and at least one second contact electrode 13, and the second contact region S2 is distributed with at least one first contact electrode 12 and at least one second contact electrode 13.

Referring to fig. 1 and 2 in combination, the electronic device 10 is provided with an annular band 16, the band 16 being attached to the housing 11 for fitting around a wrist 81 or other portion of a wearer 80 and for engaging the rear housing 14 against the skin 82 of the wearer 80.

Fig. 2 shows a schematic view of the electronic device 10 of fig. 1 in a wearing state, wherein the first contact area S1 and the second contact area S2 are distributed up and down. In fig. 2, the electronic device 10 is worn tighter or more tightly, and both the first contact area S1 and the second contact area S2 are in contact with the skin 82 of the wearer 80.

When the user wears the electronic device 10 according to the embodiment of the present application, if the user wears the electronic device normally or wears the electronic device tightly (as shown in fig. 2), the first contact area S1 and the second contact area S2 will both contact the skin 82 of the wearer 80, and at this time, the first contact electrode 12 and the second contact electrode 13 are easily ensured to contact the skin 82 due to the plurality of first contact electrodes 12 and the plurality of second contact electrodes 13; if the wearing is loose (as shown in fig. 3), the gravity or other reasons of the housing 11 and the internal mounting structure thereof may tilt to one side, so that at least one of the first contact area S1 and the second contact area S2 cannot completely contact the skin 82, at this time, since the first contact area S1 is distributed with the first contact electrode 12 and the second contact electrode 13 at the same time, the second contact area S2 is also distributed with the first contact electrode 12 and the second contact electrode 13 at the same time, so that even if the housing 11 is tilted to one side, the contact between the first contact electrode 12 and the second contact electrode 13 and the skin 82 can be ensured. As shown in fig. 3, one of the first contact area S1 and the second contact area S2 located above (the first contact area S1) is tilted away from the skin 82 of the wearer 80, and one of the first contact area S1 and the second contact area S2 located below (the second contact area S2) is pressed against the skin 82 of the wearer 80, and the first contact electrode 12 and the second contact electrode 13 distributed thereon are respectively in contact with the skin 82, so as to form a bioelectric signal acquisition circuit.

In this embodiment, all or part of the shell surface of the back shell 14 may be used as the contact area contacting the skin 82 of the wearer, and the first contact area S1 and the second contact area S2 are part of the contact area of the back shell 14, for example, the first contact area S1 may be a part of the contact area of the back shell 14 away from the skin 82 in the wearing state shown in fig. 3, and the second contact area S2 may be a part of the contact area of the back shell 14 close to the skin 82 in the wearing state shown in fig. 3.

Therefore, the electronic device 10 in the embodiment of the application has good contact reliability with the skin 82 of the wearer 80, and can be well adapted to different wearing states.

Also, the position of the rear housing 14 between the first contact electrodes 12 and/or the position between the second contact electrodes 13 may be used to provide a charging spring Pin 17 (Pogo Pin) to adapt the electronic device 10 to a paired charging base (not shown). In this manner, the electronic device 10 may also be compatible with previous generation charging bases (not shown) having charging contacts disposed in corresponding locations.

Some implementations of this example are given below.

Referring to fig. 4-5, the electronic device 10 in this embodiment is an electronic watch 10a, which is worn on a human body and can obtain an electrocardiographic signal of the human body.

Referring to fig. 4 and 5 in cooperation, the electronic device 10 in this embodiment includes a housing 11 (i.e., an outer case of a dial 18 of an electronic watch 10 a), a plurality of first contact electrodes 12, and a plurality of second contact electrodes 13. The housing 11 has a bracelet 19 attached thereto for wearing on the wrist of a wearer.

Referring primarily to fig. 4, the dial 18 of the electronic watch 10a includes a housing 11 and other structures (e.g., electronics or other functions, not shown in fig. 4) mounted inside the housing 11. The housing 11 is mainly used to define the outer contour of the dial 18 and define an inner space Q1 for mounting other structures. In an electronic device 10 having a display function, such as an electronic wristwatch 10a, a dial 18 is sealed by a casing 11 and a display 20 that are not completely sealed.

As shown in fig. 4, the housing 11 of the dial 18 includes a main frame 21 and a rear case 14. The main frame 21 is opened front and back, the rear case 14 is connected to the rear end opening of the main frame 21, the display screen 20 is connected to the front end opening of the main frame 21 to enclose a substantially closed inner space Q1 for mounting various functional devices (such as a battery, a printed circuit board, etc.) or structural members (such as a positioning support structure for supporting or positioning and mounting the functional devices) of the apparatus body.

In other embodiments, the dial 18 may be configured as desired, such as the rear case 14 and the main frame 21 being integrally provided. The display 20 may also be replaced by a front case, resulting in a dial 18 without a display.

Referring to fig. 5 in conjunction, the rear housing 14 is provided with a first contact area S1 and a second contact area S2. The first contact area S1 and the second contact area S2 are two areas on the shell surface of the rear shell 14. The shape of the first contact region S1/the second contact region S2 is not particularly limited. For example, in the embodiment shown in fig. 5, the first contact area S1 and the second contact area S2 are located on the upper and lower sides of the shell surface of the rear shell 14, respectively. Referring to fig. 5-7 in combination, a plurality of first contact electrodes 12 are spaced apart on the rear housing 14 and are electrically connected to each other either directly inside the rear housing 14 or through an intervening conductive structure, with the first contact electrodes 12 at least partially exposed outside the rear housing 14. Similarly, a plurality of second contact electrodes 13 are spaced apart on the rear case 14 and are electrically connected to each other directly inside the rear case 14 or through an intermediate conductive structure, and the second contact electrodes 13 are at least partially exposed outside the rear case 14. The first contact electrode 12/second contact electrode 13 is exposed outside the housing 11 for contact with the skin of the wearer. Of course, the exposure may be flush with the outer side of the rear housing 14, convex to the outer side of the rear housing 14, or concave from the outer side of the rear housing 14, as long as the contact with the skin 82 of the wearer 80 is enabled without being blocked by other non-conductive structures, and the first contact electrode 12/second contact electrode 13 is preferably arranged flush with or slightly convex to the outer side of the rear housing 14 to enhance wearing comfort on the basis of reliable contact. The spacing between the plurality of first contact electrodes 12/the plurality of second contact electrodes 13 may be used to arrange other components of the electronic device 10, such as a charge spring pin, a temperature sensor, etc. For example, for some products such as electronic watch 10a, it may be necessary to keep the charging spring pins 17 of original design for adapting to the general charging seat of electronic watch 10a, and these charging spring pins 17 may need to pass through the area where the electrodes are located, so that the scheme of passing the charging spring pins 17 through the contact electrodes in the prior art may cause the problem that the interference between the charging spring pins and the electrodes or the waterproof structure of the intersecting position is complex. In this embodiment, by providing a plurality of first contact electrodes 12/second contact electrodes 13 that are distributed at intervals and electrically connected to the inner side surface of the rear case 14, the foregoing charge spring thimble 17 may be disposed at the intervals, and the structural arrangement on the rear case 14 is reasonable, and the arrangement of the charge spring thimble 17 is not affected.

The first contact electrode 12 and the second contact electrode 13 in the embodiment of the present application are used to contact the skin to form a bioelectric signal acquisition circuit, respectively. The first contact region S1 is distributed with at least one first contact electrode 12 and at least one second contact electrode 13, and the second contact region S2 is distributed with at least one first contact electrode 12 and at least one second contact electrode 13. Optionally, the first contact electrode 12 and the second contact electrode 13 are ECG electrodes for acquiring human electrocardiographic signals.

When the electronic device 10 of the present embodiment is worn, if the electronic device is worn normally or is worn tightly (see fig. 2), the first contact area S1 and the second contact area S2 will both contact the skin of the wearer, and at this time, the first contact electrode 12 and the second contact electrode 13 are easily ensured to contact the skin due to the presence of the plurality of first contact electrodes 12 and the plurality of second contact electrodes 13; if the wearing is loose (refer to fig. 3), the housing 11 and its internal structure may be tilted to one side due to gravity or other reasons, and one of the first contact area S1 and the second contact area S2 may be separated from the skin of the wearer, where the first contact area S1 is distributed with the first contact electrode 12 and the second contact electrode 13, and the second contact area S2 is also distributed with the first contact electrode 12 and the second contact electrode 13, so that even if the housing 11 is tilted to one side, the contact between the first contact electrode 12 and the second contact electrode 13 and the skin is ensured.

In the present embodiment, the first contact region S1 and the second contact region S2 are distributed to the rear case 14 at a distance from each other in the first direction Y1 (up-down direction shown in fig. 5), and the rear case 14 has an intermediate region S3 between the first contact region S1 and the second contact region S2. In this implementation, the middle region S3 may be used to separate the first contact region S1 and the second contact region S2 so as to provide other structures of the electronic device 10 therebetween, such as a charge spring Pin 17 (Pogo Pin) or other measurement electrodes/sensors. When the charging spring pin 17 is provided in the middle area S3, the charging function of the electronic device 10 can be realized.

The shape of the rear housing 14 may be set as desired, such as being circular, square, polygonal, or other shapes. For example, in the embodiment shown in fig. 1, the rear housing 14 is substantially square, and four contact electrodes (including two first contact electrodes 12 and two second contact electrodes 13) thereon are distributed in a matrix. As also shown in fig. 5, the rear housing 14 is generally circular in shape, with a plurality of contact electrodes (including two first contact electrodes 12 and two second contact electrodes 13) disposed thereon in a circumferential distribution. Of course, the shape of the rear case 14 and the distribution of the contact electrodes do not need to be in one-to-one correspondence, for example, for a square rear case 14, the contact electrodes thereon may be arranged in a circumferential distribution.

Referring to fig. 5, the rear case 14 has an annular region S4 (see fig. 7 to 9, for example) protruding rearward, and a plurality of contact electrodes spaced apart from each other are circumferentially distributed in the annular region S4. One side of the annular region S4 (upper part of the annular region S4 in fig. 5) is a first contact region S1 in which at least one of the contact electrodes 12 and one of the second contact electrodes 13 are distributed. The other side of the annular region S4 (lower part of the annular region S4 in fig. 5) is a second contact region S2 in which at least one of the contact electrodes 12 and one of the second contact electrodes 13 are distributed. In this embodiment, the rear shell 14 is provided with a convex annular region S4 for the distributed arrangement of contact electrodes, facilitating contact between the contact electrodes and the skin of the wearer. Alternatively, the number of contact electrodes is 2N, N being a positive integer, where N contact electrodes are the first contact electrode 12 and N contact electrodes are the second contact electrode 13. The N first contact electrodes 12 are sequentially adjacent to each other in the circumferential direction of the annular region S4, and the N second contact electrodes 13 are sequentially adjacent to each other in the circumferential direction of the annular region S4. In other embodiments, the N first contact electrodes 12 and the N second contact electrodes 13 may also be staggered in the circumferential direction. Optionally, the contact electrode is arc-shaped. For example, as shown in fig. 5, there are four contact electrodes in total, and there are 2

first contact electrodes

12 and 2 second contact electrodes 13 respectively, each first contact electrode 12 is adjacent in turn, the second contact electrodes 13 are adjacent in turn, the distribution of the first contact electrodes 12/second contact electrodes 13 is concentrated, and the electrical connection wiring between each first contact electrode 12/second contact electrode 13 is simple and convenient. As shown in fig. 10, the first contact electrodes 12 and the second contact electrodes 13 are staggered in turn, that is, the two first contact electrodes 12 are diagonally arranged and the two second contact electrodes 13 are diagonally arranged, and in this arrangement, whether the device body is tilted to the left, right, upper and lower sides (the left, right, upper and lower sides are described in the direction shown in fig. 5, and not by way of limitation), the contact between the at least one first contact electrode 12 and the at least one second contact electrode 13 and the skin of the wearer can be ensured, so as to form a bioelectric signal acquisition circuit. In the above embodiment, the contact electrodes are in an arc ring shape, so that each contact electrode can be surrounded into a ring-shaped circumferential distribution form, the appearance is attractive, and the contact between the contact electrode and the skin of a wearer is facilitated.

As in the embodiment shown in fig. 11, the number of contact electrodes is 8, the 8 contact electrodes are sequentially spaced apart in the circumferential direction, four contact electrodes in the left side portion of fig. 11 are first contact electrodes 12 electrically connected inside the rear case 14 (the electrical connection structure is not shown in fig. 11), and 4 contact electrodes in the right side portion are second contact electrodes 13 (the electrical connection structure is not shown in fig. 11). In the rear case 14, an upper region is shown as a first contact region S1, a lower region is shown as a second contact region S2, a middle region S3 is provided between the first contact region S1 and the second contact region S2, and charging spring pins 17 are provided on left and right sides of the middle region S3 to be engaged with a charging base (not shown) of the electronic device 10. In this way, when the electronic device 10 is worn, even if the upper side is tilted or the lower side is tilted, the other side is ensured to be in contact with the skin of the wearer, so that the at least one first contact electrode 12 and one second contact electrode 13 are ensured to be in contact with the skin of the wearer, thereby forming a bioelectric signal acquisition circuit. In this embodiment, the number of contact electrodes disposed on the rear case 14 is 8, and the interval between adjacent contact electrodes on the rear case 14 is greater, so that more detection elements, such as force sensors, light sensors, etc., can be disposed on the rear case 14, increasing the data that can be detected by the electronic device 10.

The number of the first contact electrodes 12 and the second contact electrodes 13 may be equal or unequal; the number of the first contact electrodes 12/the second contact electrodes 13 may be an odd number or an even number.

Referring primarily to fig. 5 and 7, in one possible implementation, the rear housing 14 includes a main housing plate 23 and a circular plate 24 protruding outwardly from a central location of the main housing plate 23. The first contact area S1 and the second contact area S2 are both located on the circular plate 24. This implementation facilitates the contact of the first contact area S1 and the second contact area S2 with the wearer' S skin. Optionally, a plurality of accommodating grooves Q2 are formed on the outer side surface of the circular plate 24, and are distributed at intervals along the circumferential direction, and are used for accommodating each first contact electrode 12 or each second contact electrode 13. The receiving groove Q2 does not penetrate the circular plate 24, and its depth may be slightly smaller than the thickness of the corresponding first contact electrode 12/second contact electrode 13. The first contact electrode 12 and the second contact electrode 13 are exposed to the outer side surface of the circular plate 24, respectively.

This implementation facilitates the determination of the position of the first contact electrode 12 and the second contact electrode 13, and when worn, the first contact electrode 12 and the second contact electrode 13 can be pressed between the wearer's skin and the bottom surface of the groove of the accommodation groove Q2, facilitating the contact of the first contact electrode 12 and the second contact electrode 13 with the wearer's skin.

Referring to fig. 5-9, in this embodiment, dial 18 further includes a printed circuit board 25. Alternatively, when the circular plate 24 of the rear case 14 is protruded, the case inside forms a groove Q5, and the printed circuit board 25 may be fitted in the groove Q5. The groove Q5 may be a part of the aforementioned inner space Q1. The first contact electrode 12 and/or the second contact electrode 13 are electrically connected to the printed circuit board 25 through the conductive member 26, and the conductive member 26 may be a conductive foam or a conductive spring. The bioelectric signals received by the first contact electrode 12 and/or the second contact electrode 13 from the skin of the wearer may be transmitted to the printed circuit board 25 for processing analysis via conductive foam or conductive dome. Meanwhile, the conductive foam or the conductive elastic sheet has certain elasticity, can adapt to the jump of the interval between the first contact electrode 12/the second contact electrode 13 and the printed circuit board 25 in a certain range, and is beneficial to the reliability of electrical connection. Optionally, referring to fig. 13 in combination, the printed circuit board 25 includes an AFE chip 27, and the AFE chip 27 is electrically connected to the first contact electrode 12 and the second contact electrode 13, respectively, so as to collect and/or process the electrical signals from the first contact electrode 12 and the second contact electrode 13, and the AFE chip 27 may perform a pre-sampling process on the signals transferred from the first contact electrode 12 and the second contact electrode 13. In one embodiment, the first contact electrode 12/second contact electrode 13 is an ECG electrode, the corresponding AFE chip 27 has an ECG-P interface for electrically connecting the first contact electrode 12 and an ECG-R interface for electrically connecting the second contact electrode 13, the first contact electrode 12 is electrically connected to the ECG-P interface, and the second contact electrode 13 is electrically connected to the ECG-R interface, so that the bioelectric signal acquisition circuit 22 is formed, and thus, the signals acquired by the first contact electrode 12/second contact electrode 13 are respectively transferred to the AFE chip 27, and are primarily acquired and processed by the AFE chip 27 and then transferred to the main processing chip of the printed circuit board for processing.

Referring mainly to fig. 7, in the present embodiment, the circular plate 24 is further provided with a through hole Q3 penetrating from the bottom surface of each accommodation groove Q2 to the inner surface of the circular plate 24. The inner side of the rear case 14 is provided with a first conductive plate 28 and a second conductive plate 29; each of the first contact electrodes 12 is electrically connected to the first conductive plate 28 through the conductive member 26 passing through the corresponding through hole Q3, and each of the second contact electrodes 13 is electrically connected to the second conductive plate 29 through the conductive member 26 passing through the corresponding through hole Q3. The conductive member 26 may be conductive foam or conductive elastic sheet with an area of 5mm ² The above. In the present embodiment, the conductive connection of each first contact electrode 12 and the conductive connection of each second contact electrode 13 are respectively realized by the first conductive plate 28 and the second conductive plate 29 provided inside the rear case 14. Alternatively, the accommodating groove Q2 is in an arc ring shape, and the accommodating groove Q2 is in an arc ring shape and is suitable for being matched with the arc ring-shaped contact electrode. Optionally, the first conductive plate 28 and the second conductive plate 29 are also arc-shaped. The first conductive plate 28 and the second conductive plate 29 may employ flexible circuit boards. The aforementioned firstThe conductive plate 28, the second conductive plate 29, may be accommodated in the groove Q5 and located between the printed circuit board 25 and the circular plate 24.

The electronic device 10 in this embodiment further includes two charging spring pins 17 (see fig. 5), where one charging spring pin 17 is located between two adjacent first contact electrodes 12, and the other charging spring pin 17 is located between two adjacent second contact electrodes 13, and the two charging spring pins 17, the first contact electrodes 12, and the second contact electrodes 13 are substantially distributed in an annular area, and the arrangement mode further has the effects of good contact reliability with the skin 82 and being able to better adapt to different wearing states as described above on the basis of being compatible with the previous generation charging base in which the charging contacts of the charging spring pins 17 are arranged at corresponding positions.

In this embodiment, two through holes Q4 are also formed in the circular plate 24 to allow the charge spring pins 17 to be exposed to the outer side surface of the circular plate 24. The through holes Q4 are located on the circumference of the accommodating groove Q2 and are located at positions of the circular plate 24 between the adjacent accommodating grooves Q2. In the implementation mode, the circular plate 24 is provided with the charging spring thimble 17 and simultaneously provided with each contact electrode, so that the space arrangement is reasonable. And the problems of complex structure matching relation and poor sealing caused by the fact that the charging spring thimble 17 passes through the contact electrode are avoided, and meanwhile, the reasonable distribution of the first contact electrode 12 and the second contact electrode 13 is ensured, so that the formation of the bioelectric signal acquisition circuit 22 is facilitated.

Referring mainly to fig. 7, the first conductive plate 28/the second conductive plate 29 adopts an arc ring-shaped flexible circuit board, the arc directions of which are respectively provided with a first contact D1 near both ends, a conductive line D3 electrically connecting the two first contacts is arranged inside, and the arc directions of the first conductive plate 28/the second conductive plate 29 are provided with a second contact D2 in the middle position, and no conduction exists between the second contact D2 and the first contact D1 or the conductive line D3.

The two first contacts D1 of the first conductive plate 28/the second conductive plate 29 are respectively used for electrically connecting the two conductive members 26 correspondingly connected to the first contact electrode 12/the second contact electrode 13, so as to be connected to the two first contact electrode 12/the second contact electrode 13, and further connected to the ECG-P interface/the ECG-R interface of the AFE chip 27, thereby forming the bioelectric signal acquisition circuit 22.

The two charging spring pins 17 pass through the corresponding through holes Q4 and are electrically connected to the second contacts D2 of the first conductive plate 28/the second conductive plate 29, and can be connected to the charging circuit of the electronic device 10. Of course, in other embodiments, the first conductive plate 28 +.

The second conductive plate 29 may be provided with a through slot (not shown in the drawing) on the first conductive plate 28/the second conductive plate 29 instead of the second contact D2, and the charging spring thimble 17 may be directly welded and fixed at a corresponding position of the printed circuit board 25 in a conductive manner after passing through the first conductive plate 28/the second conductive plate 29 from the slot.

In this arrangement, through the arrangement of the contacts of the first conductive plate 28/the second conductive plate 29 and the conductive line D3, each of the first contact electrode 12, the second contact electrode 13 and the charging spring thimble 17 can be reasonably connected into a corresponding circuit inside the electronic device 10, and the structure is simple and reasonable. Referring to fig. 12, for the embodiment in which 4 first contact electrodes 12/second contact electrodes 13 are used as shown in fig. 11, the arc extension of the first conductive plate 28/second conductive plate 29 may cover the conductive member 26 and the corresponding charging spring thimble 17 of each first contact electrode 12/second contact electrode 13 based on the arrangement of fig. 7, so that all the first contact electrodes 12/second contact electrodes 13 and the corresponding charging spring thimbles 17 can be conveniently and correspondingly electrically connected to the first conductive plate 28/second conductive plate 29, for example, the conductive connection of the first contact electrodes 12/second contact electrodes 13 and the charging spring thimbles 17 and the first conductive plates 28/second conductive plates 29 is achieved by providing contacts and conductive lines on the first conductive plates 28/second conductive plates 29.

In other embodiments, referring to fig. 14 and 15, the first contact electrode 12 and/or the second contact electrode 13 may further be configured to include a substrate 30 and a conductive layer 31 disposed on a surface of the substrate 30, and in this embodiment, the substrate 30 may be configured to use a non-conductive material such as glass to achieve and contact electrical conduction through the conductive layer 31 disposed on the surface of the substrate 30. The conductive layer 31 may be formed by coating, electroplating, chemical deposition or other means, and may be a metallic conductive material such as chromium, pick, etc. For example, the first contact electrode 12 and/or the second contact electrode 13 are formed by forming a chromium layer/pick layer on the glass substrate 30 by plating. The first contact electrode 12 and/or the second contact electrode 13 in this form may be electrically connected to the printed circuit board 25 by the conductive member 26 with the conductive layer 31. Of course, as previously described, in some implementations, the conductive member 26 may be a conductive foam or a conductive dome. The shape of the first contact electrode 12 and/or the second contact electrode 13 in this form may be the same as or different from the previous embodiment.

Referring again to fig. 4 and 5, as described above, the electronic device 10 in this embodiment is an electronic wristwatch 10a, and the rear case 14 has a first connecting ear 32 and a second connecting ear 33 disposed opposite to each other along a second direction Y2 (left-right direction shown in fig. 5), and both ends of the bracelet 19 are respectively connected to the first connecting ear 32 and the second connecting ear 33, and form a ring with the dial 18 for being put on a wrist 81 of a human body. The first contact region S1 and the second contact region S2 are distributed to the rear case 14 at a distance from each other in the first direction Y1 (up-down direction shown in fig. 5), and the rear case 14 has an intermediate region S3 between the first contact region S1 and the second contact region S2. The electronic watch 10a further comprises two charging spring pins 17, the two charging spring pins 17 being arranged at intervals in the middle area S3 along the second direction Y2. When the electronic wristwatch 10a is worn on the human wrist 81, the first direction Y1 is a long direction along the human wrist, and the second direction Y2 is a long direction perpendicular to the human wrist. The electronic device 10 in this implementation is an electronic wristwatch 10a, and the natural state of the hands of the wearer is that the hands hang down (see fig. 2 or 3), and the first direction Y1 is along the gravity direction, that is, the first contact area S1 and the second contact area S2 are distributed vertically. When the wearing is tighter, the first contact area S1 and the second contact area S2 can be ensured to contact the wrist, and the collection of bioelectric signals is ensured; meanwhile, when the electronic watch 10a is loosely worn, the dial 18 of the electronic watch 10a is lifted off the wrist skin by the action of gravity and the restriction of the watch chain 19, but one of the first contact area S1 and the second contact area S2 located below is pressed against the wrist skin, that is, one of the first contact area S1 and the second contact area S2 is in contact with the wrist skin, and the first contact electrode 12 and the second contact electrode 13 are arranged on either one of the first contact area S1 and the second contact area S2, so that the collection of bioelectric signals can be similarly performed.

By combining the above, the electronic device 10 in the embodiment of the application has the beneficial effects of better contact reliability with the skin of a wearer, and being capable of reliably collecting bioelectric signals, and also being capable of considering the arrangement of the electrodes when the positions of some charging spring ejector pins 17 cannot be moved.

The embodiment of the application also provides a bioelectric signal acquisition method, which comprises the following steps: the subject wears the aforementioned electronic device 10, and at least one of the first contact area S1 and the second contact area S2 is brought into contact with the skin 82 of the subject, so that at least one first contact electrode 12 and at least one second contact electrode 13 are brought into contact with the skin 82 of the subject to form the bioelectric signal acquisition circuit 22, thereby acquiring the bioelectric signal of the subject. Alternatively, the bioelectric signal is an electrocardiographic signal or a body composition electrical signal. The bioelectric signal acquisition method in the embodiment of the application adopts the electronic equipment 10, can adapt to the requirement of acquiring the bioelectric signal under the condition of loose or tight wearing, and ensures the reliability of signal acquisition.

The above embodiments are only for illustrating the technical solution of the present application and not for limiting, and although the present application has been described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application.

Claims

1. An electronic device, comprising:

a housing including a rear housing; the rear shell is distributed with a first contact area and a second contact area;

the first contact electrodes are distributed on the rear shell at intervals and are electrically connected with each other on the inner side of the rear shell; the first contact electrode is at least partially exposed outside the rear case;

the second contact electrodes are distributed on the rear shell at intervals and are electrically connected with each other on the inner side of the rear shell; the second contact electrode is at least partially exposed outside the rear case; and, the second contact electrode and the first contact electrode are distributed on the rear case so as to be insulated from each other;

the first contact area is distributed with at least one first contact electrode and at least one second contact electrode, and the second contact area is distributed with at least one first contact electrode and at least one second contact electrode.

2. The electronic device of claim 1, wherein:

the first contact region and the second contact region are spaced apart from each other along a first direction at the rear housing, the rear housing having an intermediate region between the first contact region and the second contact region.

3. The electronic device of claim 2, wherein:

the electronic device further comprises a charging spring thimble, and the charging spring thimble is arranged in the middle area.

4. An electronic device according to any one of claims 1-3, characterized in that:

the rear shell is provided with an outwards convex annular area, and a plurality of contact electrodes which are spaced from each other are distributed in the circumferential direction in the annular area;

one side of the annular area is the first contact area, and at least one first contact electrode and one second contact electrode are arranged in the first contact area;

the other side of the annular region is the second contact region, and at least one first contact electrode and one second contact electrode are arranged in the second contact region.

5. The electronic device of claim 4, wherein:

the number of the contact electrodes is 2N, N is a positive integer, N of the contact electrodes are the first contact electrodes, and the other N of the contact electrodes are the second contact electrodes;

n first contact electrodes are sequentially adjacent to each other in the circumferential direction of the annular area, and N second contact electrodes are sequentially adjacent to each other in the circumferential direction of the annular area; or the N first contact electrodes and the N second contact electrodes are staggered along the circumferential direction.

6. The electronic device of any one of claims 1-5, wherein:

the rear shell comprises a main shell plate and a circular plate protruding outwards from the central position of the main shell plate;

the first contact region and the second contact region are both located on the circular plate.

7. The electronic device of claim 6, wherein:

the outer side surface of the circular plate is provided with a plurality of accommodating grooves which are distributed at intervals along the circumferential direction and are used for accommodating the first contact electrodes or the second contact electrodes;

the first contact electrode and the second contact electrode are respectively exposed out of the outer side surface of the circular plate.

8. The electronic device of claim 7, wherein:

the circular plate is also provided with through holes which penetrate from the bottom surface of the groove of each accommodating groove to the inner side surface of the circular plate;

a first conductive plate and a second conductive plate are arranged on the inner side of the rear shell; each of the first contact electrodes is electrically connected to the first conductive plate through a conductive member passing through the corresponding through hole, and each of the second contact electrodes is electrically connected to the second conductive plate through a conductive member passing through the corresponding through hole.

9. The electronic device of claim 8, wherein:

the electronic equipment further comprises a charging spring thimble;

the circular plate is also provided with a through hole for allowing the charging spring thimble to be exposed out of the outer side surface of the circular plate;

the through holes are positioned on the circumference of the accommodating grooves and positioned between the adjacent accommodating grooves of the circular plate.

10. The electronic device of claim 6, wherein:

the shell comprises a main frame, the front and rear openings of the main frame are formed, and the rear shell is connected to the rear end opening of the main frame.

11. The electronic device of claim 1, wherein:

the first contact electrode and/or the second contact electrode are/is composed of a conductive material; or alternatively, the process may be performed,

the first contact electrode and/or the second contact electrode comprises a substrate and a conductive layer positioned on the surface of the substrate.

12. The electronic device of claim 1, wherein:

the housing further comprises a printed circuit board;

the first contact electrode and/or the second contact electrode is electrically connected to the printed circuit board through a conductive member.

13. The electronic device of claim 12, wherein:

The conductive piece is conductive foam or conductive elastic sheet.

14. The electronic device of claim 12, wherein:

the printed circuit board includes an AFE chip electrically connected to the first contact electrode and the second contact electrode, respectively, to collect and/or process electrical signals from the first contact electrode and the second contact electrode.

15. The electronic device of any one of claims 1-14, wherein:

the electronic equipment is an electronic watch or an electronic bracelet.

16. The electronic device of claim 1, wherein:

the electronic equipment is an electronic watch, and the shell is a dial plate of the electronic watch;

the electronic watch further includes a fob coupled to the housing; the outer shell is provided with a first connecting lug and a second connecting lug which are oppositely arranged along a second direction, and two ends of the watch chain are respectively connected with the first connecting lug and the second connecting lug, and the watch chain and the outer shell are enclosed into a ring shape and are used for being sleeved on the wrist of a human body;

the first contact region and the second contact region are distributed at intervals to the rear shell along a first direction, and the rear shell is provided with an intermediate region positioned between the first contact region and the second contact region; the electronic watch further comprises two charging spring ejector pins, and the two charging spring ejector pins are arranged in the middle area at intervals along the second direction;

When the electronic watch is worn on a human wrist, the first direction is along the long direction of the human wrist, and the second direction is along the long direction perpendicular to the human wrist.

17. The electronic device of any one of claims 1-16, wherein:

the first contact electrode and the second contact electrode are ECG electrodes or body composition detection electrodes.

18. A bioelectric signal acquisition method is characterized in that:

the electronic device of any one of claims 1-17 being worn by a subject, and contacting at least one of the first contact area and the second contact area with the skin of the subject, such that at least one of the first contact electrode and at least one of the second contact electrode are in contact with the skin of the subject to form a bioelectric signal acquisition circuit, thereby acquiring bioelectric signals of the subject.

19. The bioelectric signal acquisition method according to claim 18, characterized in that:

the bioelectric signal is an electrocardiosignal or a body composition electric signal.